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1.a well is contaminant with 340 mg/L of tetrachloride ( perchloroethylene) . the water must be remediated to achieve a concentration of 0.2 mg/L ( the detention limit ). Design a packed tower strpping column to meet this requirement using the following design parameters.
2.Water at a pressure of 13 atm, at street level, flows into a building at 3m/s through a 6 cm diameter pipe. The pipe tapers down to a 2 cm diameter by the top floor 50 m above. The density of water is 1,000 kg/m^3. Calculate the water pressure and velocity on the top floor?
3.Explain how heat is transfered from one oject to another and describe how the construction of a Thermos Bottle prevents this transfer?
Gas flows at a steady rate in a 120-mm-diameter pipe that enlarges to a 180-mm-diameter pipe. At a certain section of the 120-mm pipe the density of the gas is 165 kg/m^3 and the velocity is 15 m/s.
Light-Voice Controlling System. We are planning to design a new light-voice controlling system. The voices will basically coordinate the crossing of a road by blind people. Suppose the crossing will be operated by two coordinated systems
a level is setup midway between X and Y reads 5.572 ft on X and 4.946 ft. on Y. The level is setup very close to X and a reading of 4.666 ft. is taken on X. what should the reading be at Y to adjust any collimation error of the level
What is the concentration of tracer in the reactor 1 h after tracer addition is terminated? The reactor had an initial concentration of tracer of 1.0 mg/L when tracer addition commenced.
Use A992 steel (Fy=50ksi). In the plane perpendicular to the frame, the system is braced with supports at the top and bottom. Use stiffness reduction factor τ to determine effective length k
a cast iron water main 14m long of 600 mm inside diameter and 30 mm wall thickness runs full of water and is supported
Compute azimuths of all lines for aclosed traverse ABCDEFGHA that has the following balanced angles tothe right, using Bearing AB = N56º18'42"W.
You have 4 resistors (loads) in parallel. What is the total resistance of those loads The loads are as follows 4ohms, 6ohms, 16ohms and 1 ohms. When calculating 1/R, round to the fourth decimal point. Percentage of error margin is 0.5
Rain falls at an average intensity of 0.4 in/h over a 600-acre areafor 3 days. a) Determine the 3-days volume of rainfall in acre-ftand ft3,b) determine the average rate of rainfall incubic feet per second
the water is subjected to a 100 fold increase in pressure. determine the initial weight and final density of the water if the volume decreases by .545 ft ^3.
A newspaper reports that in the last 5 years, prices have increased a total of 50%. this is equivalent to what annual inflation rate, and is it compounded annually
what is the second year book value for equipment with an initial cost of $11,000, a salvage value of 1,000 and a recovery period of 5 yrs for A. straight line depreciation. B. Double declining balance. C. MACRS
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